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STRAP TIGHTENER.

'APPLICATION FILED MAR. 7 I9I9.

Patented 001. 21,1919.

C@ @Ln/Ma@ ino" formind a 4artx .of this s ecifioatioand ai c, l) l UNITED STATES g iaTENT OFFICE.

SAMUEL J'. TURNER, 0F CHQAGO,niifnvoisiessiena or oas-Hete To omonima,

0F WIIJMETTE, .l]4|ZiI1\TOISy ,seexrmeafsaee y i .v f l .l

Apimeaaenlmea'iiemh 7, 1919i serai No: s131261 v To all whom' t may concern:

Be a known that i, sAMeL J. Temen,

a citizen of the United States,- residing at Chicago, in the county of Cook a'nd State of Illinois, have inventedeertainnew and useto boxes, ca'rtons,.bales','ete;, for holdingsucli bodies firmly together, it is* neeessary to adequately tighten such nietal ribbonsV or tapes land various styles Yof appliaiiees have heretofore been lzrojg'x'ised to accomplish' this worliybut, so far'as I am'ad'vised', all of these I 5 meehanisifnshave one' or ino-'re seriousfaults whencc'msideredl` froin a" structural, reanufacturing, or operative standpoint.

The ieafiing ebjeet' ef this invenfien'ie te provideJ an apparatus of this4 general charor strap, and. which unlikely to become damaged or injured' in service.

In order that those skilled may have a full and complete understanding of the; inventionV and its varibus advantages I have Villustrated the,y acoi'iipiiiyingf drawthroughout 'the various* views of which like reference Vcharacters refer to the' saine parts,

a preferred'Y and desirable einbodiinent of the inventiombutit is'to be understood that the inventionl'is'not limited' and restrited to this particular'enibodiinent since the in# vention issusceptible of a variety of enibodi- 'ments allpincorporating its main or lo4 Pfis- AcipalA features and elements.

In this drawing:

" 4,Figure 1 is an elevation of the apparatus ,show'inof the inainnerjinl which it grips the two' ends of the band or strap tobe' tightened;

Fig. 2 isa p'lanfview ofthe structure, the

joperating handle being shown in section;

and

' Fig. y9s-,is av crossseoti'on on' line 3 3 ofl Fig. 2;-

drical r`ods12, 121the ends'of which are litt-ed vand fiXedly secured in' cavities or recesses iii suoliV terminal' eleiients'. @n its" top each of suchend bodie'si's cut avv'ay or reduced in thickness 13 and in sueh' two;I alined'or registering' spaces;` the;'end'V pribns of, a

--ratohet-baii 14 a're fastened byooiinter- -ennkserewsivi, '15,' such bar l'having- 'its' ratehet-teeth' 0n andfdisposed transversely .of its topV surface.Y Thus' the parts' 10, 11, Y 12- vand 14 imitedly or c njoiritly'-forni' a stiff, rigidfstronglfaine for supporting and oac'ting ,withg the other partsof the device.

pliance to the under portion of the endbody 11, beii'rg"` receivedv inxi atran'sverse groove inV itlsfbo'ttoii faceY provided for that purpose,a'nol such bai* or plate extends laterally or transversely of the applianoe beyond the lower artof the body forming a; shelf er ledge y or:v receiving the' band orstrap te 'bef tightened;v Above such protruding or Vprojecting pat of the bar, the body 11 isiitted with an eccentric or earn cl'arnpE 17; provided with? a handle" 18;V adapted to grasp v and securely hold the band or strap between' itselfJ andthe bar all aswllbe'eadily understood.- This-.eccentric cla'rnp is' ful'cru'ined on a shaft 19',s u itably ixed'irithe'main portioni of' the part 11' andina right-angle eX- tension'Y or 20 integral' with a'iid eX-' tended forwardly from" the rnaiii body. A bleek 21, recessed en Pitstop; fer the accommodation of the ratchet-bar .14, fis aperturedE to"v receive the guide rds 12, 12 onvvhich itis supportedand slidableflengthwise'the device; Such blol'is also'equipped with a transverse'ba'r' or plate`21i` and anassociat'e'dl eccentric or cani clamp" 22 fitted witlif an'foperatig-handle Asisl Clearly shown;y these two clainps of the end body andthe reciprocating block are in register yand at'one side of the'main portionV of the appliance to readily' ,receive the terininal portionsof ythey band or strapY 100; to/be 'l tightened oij'i'nade tense, whereby such'iband ends Inay be clamped or fastened together Aby means ofA 'a clip 101 adapted kto be "integr-1k lockedtothe voverlapped ends yof thestra'p by ani apparatusnot' shown enablingv the."v Y 105 'Y band to; p"'rfor.rn its constraining, const'riet-A ing and confining function; f g

Iir ears 2,4, 24 upstanding frein the reciprooa'tory block onX a non-rotating' shafti25, a i

'gea-r sector 26, supplied with a rock-handle 27, isf'fulcrunied or' hinged, th'etee'tl'ithreoff smooth side portions 30, 30 of theratchet-A bar, not provided with teeth, being prevented from crosswiseor lateral displace-l ment by the ratchet-teeth and the ears 24, 24.

Y Toy prevent movement of the rack-bar away from the band clamp 16, 17 and at the same time permit it-s approach toward such clamp, the bar is supplied with al pawl 31 pivoted thereto by means of a hinge or pivot pin 32 and spaced projections 33, 33 supporting it, the pawl overlying and coperating with the stationary ratchet-teeth in the usual manner. In a similar way and for a similar purpose block 21 is supplied with a pawl or dog 34 hinged to the block at 35 and straddling and coacting with the teeth or beveled projections ofthe ratchetbar.

The operation of the apparatus is as follows: One end portion of the flat metal band or strap 100 which encirclesthe body to be bound or coniined is inserted between the plate 16 and clamp 17 whereupon the latter is turned by its handle 18 to grip or grasp the metal band or ribbon securely and firmly. If desired, the top surface of such bar or plate may be knurled or roughened to insure the efficiency of this holding action. In Alike manner the other end of the metal strap or tape is clamped between the gripping members21 and 22 of the reciprocatory block, which, by releasing or lifting the pawls, may b e shifted or slid away from the clamping elements first mentioned. Both pawls or dogs now engaging the teeth of the rack-bar, the handle 27 is swung to the left which slides the rack-bar and its pawl to the. right, the latter easily riding over the beveled or sloping teeth of the stationary ratchet-bar; During this action block 21 and its pawl remain stationary. Then handle 27 is rocked to the right, and, inasmuch as the rack-bar is Aheld against sliding to the left by its pawl ecooperating with one of the rack teeth, block 21 is forcibly shifted to the right, tightening the band clamped to it, its .pawl readily traveling over the ratchetbar teeth. Vhile the slidable block with the strap or band clamped thereto is prevented from retrograde travel to the left by its pawl, handle 27 isswung to the left again advancing the rack-bar to the right another step, and then rocked to the right again carrying the block. still farther in the same direction thus additionally tightening and stretching the band. This alternate rocking action of the handle is continued Vuntil the strap or band ends overlap, which overlying parts are fitted with a fastening :"clip 101 intended tobe deformed or bent by minor mechanical changes may be incorpo-` rated in the structure presented without departure from the heart and essence of the invention and without the sacrice of any of its substantial benefits and advantages.

I claim: l

1. In a strap-tightener of the character designated, the combination of a support,

l a ratchet-bar thereon, a block slidable on said support, means to clamp a section of the strap to be tightened to said support, means to clamp a section of such strap to said block, a rack slidable on said support, a Vgearsector fulcrumed on said slidable block and in mesh with said rack, a handle to rock said sector, a pawl on said rack adapted to coact with said ratchet-bar, and a pawl on said slidable block cooperating with said ratchet-bar, whereby oscillation of said gearsector by its handle intermittently advances said block and its strap-clamp toward the companion strap-clamp, substantially as described. Y Y

2. In a strap-tightener of the character designated, the combination of a support, a strap-clamp thereon, a block slidable on said support toward and from said cl-amp, a companion strap-clamp on said slidable block, a gear-sector fulcrume'd on said block, a handle to rock said gear-sector, a rack slidably mounted on said support and in mesh with said sector, adjustable means to prevent the rack from moving away from but permitting its movement toward the clamp on said support, and adjustable means to prevent the yblock from moving away from but permitting its movement towardrthe clamp on the support, substantially as described.

3. In a strap-tightener of the character designated, the combination of a support, a strap-clamp thereon, a block slidable on said support toward and from said clamp, aV companion strap-clamp on said slidable block, a

gear-sector fulcrumed on said block, a handle to roclr said gear-sector, a rack slidably mounted on said support and in mesh with said sector, automatically adjusting means to prevent the rack from moving away from but permitting its, movement toward such support clamp, and automatically adjusting means to prevent the block from moving away from but permitting its movement to- Ward said support clamp, substantially as ion strap-clamp on said slidable block, a 10 described. gear-sector fulcrumed on said block, a handle i 4. In a strap-tightener of the character to rock said gear-sector, a rack slidable on described, the combination of a pair of end said ratchet-bar with its teeth iri mesh With 5 bodies, a pair of rods connecting said bodies those of said sector, a paWl on said rack cotogether, a ratchet-bar connected to said operating With said ratchet-bar, and a pawl 15 bodies, a strap-clamp on one ofv said end on said block coperating with said ratchetbodies, a block slidable on said connectingbar, substantially as described* rods toward and from said clamp, a compan- SAMUEL J. TURNER.

copie: of this patent may be obtained for live cents each, by addressing the Commissioner of Patents,

Washington D. C. 

